Re: [PATCH 4/6] xfs: persist quota flags with metadir

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On Thu, Aug 22, 2024 at 05:28:59PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@xxxxxxxxxx>
> 
> It's annoying that one has to keep reminding XFS about what quota
> options it should mount with, since the quota flags recording the
> previous state are sitting right there in the primary superblock.  Even
> more strangely, there exists a noquota option to disable quotas
> completely, so it's odder still that providing no options is the same as
> noquota.
> 
> Starting with metadir, let's change the behavior so that if the user
> does not specify any quota-related mount options at all, the ondisk
> quota flags will be used to bring up quota.  In other words, the
> filesystem will mount in the same state and with the same functionality
> as it had during the last mount.

This means the only way to switch quota off completely with this
functionality is to explicitly unmount the filesystem and then mount
it again with the "-o noquota" option instead of mounting it again
without any quota options.

If so, this will need clear documentation in various man pages
because users will not expect this change of quota admin behaviour
caused by enabling some other unrelated functionality (like
rtgroups).....

-Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx




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